Examlex
In evolutionary terms, which of the following cells is considered to be the most primitive?
Antivenom
A substance, typically serum or a purified antibody, used to treat venomous bites and stings by neutralizing the specific toxins involved.
Antibodies
Proteins produced by the immune system that recognize and bind to specific antigens, helping to protect the body from pathogens.
Cytotoxic T Cell
A type of immune cell capable of killing cancer cells, cells that are infected (particularly with viruses), or cells that are damaged in other ways.
Killer Cell
A type of immune cell that can kill cancer cells, cells infected with viruses, or other damaged or dangerous cells.
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